To take it one step further: Cells A2:A6 contain dates. Cells C2:C6 have letter grades (A, B, or C) I want Cells B2:B6 to be highlighted red if nothing is entered in to those cells after 30 days if they're an A, or 15 days if they're a B, or 7 days if they're a C. How do I do that?
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